SiC纤维表面涂层的制备及其作用研究进展  

Research progress in preparation and effect of surface coating on SiC fibers

作　　者：康伟峰 邢欣[1] 张禹 闫德轩 苟燕子[1] KANG Weifeng;XING Xin;ZHANG Yu;YAN Dexuan;GOU Yanzi(Science and Technology on Advanced Ceramic Fibers and Composites Laboratory,College of Aerospace Science and Engineering,National University of Defense Technology,Changsha 410073,China)

机构地区：[1]国防科技大学空天科学学院新型陶瓷纤维及其复合材料重点实验室,长沙410073

出　　处：《材料工程》2023年第8期33-45,共13页Journal of Materials Engineering

基　　金：湖南省自然科学基金面上项目(2022 JJ30662);国防基础科研计划(WDZC20215250507)。

摘　　要：SiC纤维作为陶瓷基复合材料(CMC)的常见增强体之一,具有较低的密度、较高的拉伸强度以及优良的耐高温和耐氧化性能。在SiC纤维表面制备涂层,不仅可提升纤维本身的力学性能、耐高温性能、抗氧化性能以及电磁功能特性,而且还可有效改善纤维与基体界面的结合性能,提高复合材料的断裂韧性与力学性能。本文首先对SiC纤维表面涂层的制备方法进行了综述,阐述了刻蚀法、沉积法、化学气相渗透法以及先驱体转化法等方法的基本过程及相关研究进展,并对比了不同制备方法的优缺点,然后综述了涂层对SiC纤维及其增强的复合材料的影响,最后对SiC纤维上制备涂层的发展趋势进行了总结归纳,可以采用实验研究与计算仿真相结合的手段来模拟SiC纤维涂层的真实服役环境,并可以通过制备热障复合涂层来提高纤维在极端服役条件下的使用性能。SiC fiber is one of the common reinforcements for ceramic matrix composite(CMC)due to its superior characteristics such as low density,high tensile strength,excellent high temperature resistance and oxidation resistance.The preparation of coating on the surface of SiC fiber can not only improve the mechanical properties,high temperature resistance,oxidation resistance and electromagnetic functional properties of the fiber itself,but also effectively improve the bonding properties of the interface between the fiber and the matrix to promote the fracture toughness and mechanical properties of the composite.The preparation methods of surface coatings on SiC fiber were firstly reviewed in this paper by elaborating on the basic processes and related research progress of etching,deposition,chemical vapor infiltration,and precursor derived methods,and the advantages and disadvantages of different preparation methods were compared.Then the effects of coatings on SiC fibers and their reinforced composite materials were reviewed.Finally,the development trend of surface coating on SiC fibers was briefly summarized.The combination of experimental research and computational simulation can be used to simulate the real service environment of SiC fibers coatings,and the performance of fibers under extreme service conditions can be improved by preparing thermal barrier composite coatings.

关 键 词：SIC纤维 CMC 表面涂层 制备 界面 

分 类 号：TQ174[化学工程—陶瓷工业]